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    <title>Ajax与Comet</title>
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<h1>第二十一章 Ajax与Comet</h1>
<form id="user-info">
    <p>username:</p>
    <input type="text" id="username" name="username">
    <p>password:</p>
    <input type="text" id="password" name="password">
</form>
<div id="status"></div>
<button onclick="sendTest()">sendTest</button>
<button onclick="FormDataTest()">FormDataTest</button>
<button onclick="ontimeoutTest()">ontimeoutTest</button>
<button onclick="overrideMimeTypeTest()">overrideMimeTypeTest</button>
<button onclick="ImageTest()">ImageTest</button>
<button onclick="jsonpTest()">jsonpTest</button>
<button onclick="createStreamingClientTest()">createStreamingClientTest</button>
<script type="text/javascript" src="../js/ch21.js"></script>
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